Mr. Heater forced air propane heaters provide instant heat even and feature Quiet Burner Technology, making them 50% quieter than a standard propane heater. The 60,000 BTU model heats up to 1,500 sq ft quick and effortlessly. Also features variable output from 30,000 to 60,000 BTUs, a continuous electronic ignition for quick and reliable starting. Equipped with a high temperature safety shut-off switch and thermo-electric safety valve to shut down the unit in unsafe conditions, so you��ll have peace of mind to focus on the task at hand. Includes a 10 ft hose and regulator with an approximate 12 hours of run time on a 20 lb propane tank, so whether on the work site or in the garage, stay comfortably warm while getting the job done. Forced air propane heater with quiet burner technology, making it 50% quieter High and low settings: 60,000-30,000 BTUs Heats up to 1,500 sq ft High temperature safety shut-off switch Thermo-electric safety valve Approximate 12 hours of run time on a 20 lb propane tank Continuous spark ignition, requiring a 115 Volt AC outlet